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48 Zeilen
1.6 KiB
48 Zeilen
1.6 KiB
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
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%% ex: ts=4 sw=4 et
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-module(rebar_prv_help).
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-behaviour(provider).
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-export([init/1,
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do/1]).
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-include("rebar.hrl").
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-define(PROVIDER, help).
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-define(DEPS, []).
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%% ===================================================================
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%% Public API
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%% ===================================================================
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-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
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init(State) ->
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State1 = rebar_state:add_provider(State, providers:create([{name, ?PROVIDER},
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{module, ?MODULE},
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{bare, false},
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{deps, ?DEPS},
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{example, "rebar help <task>"},
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{short_desc, "Display a list of tasks or help for a given task or subtask."},
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{desc, ""},
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{opts, []}])),
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{ok, State1}.
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-spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}.
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do(State) ->
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help(State),
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{ok, State}.
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%%
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%% print help/usage string
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%%
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help(State) ->
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?CONSOLE("Rebar is a tool for working with Erlang projects.~n~n", []),
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OptSpecList = rebar3:option_spec_list(),
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getopt:usage(OptSpecList, "rebar", "", []),
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?CONSOLE("~nSeveral tasks are available:~n", []),
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providers:help(State),
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?CONSOLE("~nRun 'rebar help <TASK>' for details.~n~n", []).
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